Fun informative guides on how people in the past solved technological problems.

This children's book explores the innermost workings of some extraordinary buildings and machines. From helicopters to submarines, skyscrapers to coal mines, open up a fascinating world packed with unique and detailed cutaway drawings. Whether it's a Spanish galleon or a medieval castle, each cross-section slice or exploded view reveals what's going on inside. See the people swarming inside the Empire State Building, the workers busy backstage at an opera house, and where the crew sleep on a jumbo jet. Included also are two impressive fold-outs showing an ocean liner and a steam train. ...

A gallery of bugs and pests tell you everything you want to know about deadly diseases and pox-like pestilence.